Easy method to add screens to your car/truck windows. Cut screen two or 3 inches bigger of window, Place screen on window than place small magnets all around to hold screen. Or sew strip magnets into margins.
Camp in Your Car with Magnetic Window Screens -- without running the battery all night or opening a window to the elements, it's impossible to get any air flow in the cabin. Impossible, that is, without these awesome magnetic window coverings.